Update elastic/go-sysinfo to v1.2.0 (#15293)

NOTICE.txt

@@ -1114,13 +1114,19 @@ Apache License 2.0
 
 --------------------------------------------------------------------
 Dependency: github.com/elastic/go-sysinfo
-Version: v1.1.0
-Revision: 51d9d1362d77a4792dfb39a7a19f056cdf1b9840
+Version: v1.2.0
+Revision: bd0a84193268134cbe6cdd21b0a5618aee1f5791
 License type (autodetected): Apache-2.0
 ./vendor/github.com/elastic/go-sysinfo/LICENSE.txt:
 --------------------------------------------------------------------
 Apache License 2.0
 
+-------NOTICE.txt-----
+Elastic go-sysinfo
+Copyright 2017-2019 Elasticsearch B.V.
+
+This product includes software developed at
+Elasticsearch, B.V. (https://www.elastic.co/).
 
 --------------------------------------------------------------------
 Dependency: github.com/elastic/go-txfile

vendor/vendor.json

@@ -2835,12 +2835,12 @@
 			"versionExact": "v0.0.6"
 		},
 		{
-			"checksumSHA1": "rfr1yBSyYTHNU3p1NKftIyzr/eQ=",
+			"checksumSHA1": "rQiXI5O9NmODCPE2GZllkZMZPn8=",
 			"path": "github.com/elastic/go-sysinfo",
-			"revision": "51d9d1362d77a4792dfb39a7a19f056cdf1b9840",
-			"revisionTime": "2019-08-22T16:44:40Z",
-			"version": "v1.1.0",
-			"versionExact": "v1.1.0"
+			"revision": "bd0a84193268134cbe6cdd21b0a5618aee1f5791",
+			"revisionTime": "2019-12-09T20:02:09Z",
+			"version": "v1.2.0",
+			"versionExact": "v1.2.0"
 		},
 		{
 			"checksumSHA1": "GiZCjX17K265TtamGZZw4R2Jwbk=",